BMW LSD studio has years of experience in the repair of differentials of all automobile brands, in particular transfer boxes repairs, gear sets sells and specializes in modifying the Limited slip differentials of BMW. BMW LSD conversion. All about Modification of the differential case with a higher percentage of lock. Choice of gear ratio. Bearings change. Differential ring and pinion gear setup. LSD for models Е46, Е39, Е60, Е38,... where the manufacturer does not offer such a differential.